Cretaceous-tertiary cloud chamber / Niles Eldredge -- Palynological change across the Cretaceous-Tertiary boundary on Seymour Island, Antarctica : environmental and depositional factors / Rosemary A.

The elevated concentration of iridium-one of the platinum-group elements (PGE)-at the Cretaceous-Tertiary boundary is still the most generally accepted evidence that a large bolide struck the earth at ...

This is a preview. Log in through your library . Abstract The Cretaceous/Tertiary boundary event exerted a deep influence on the life of the benthic invertebrates in the Danish Basin. The density and ...

Did a collision with a giant asteroid or comet change the shape of life on Earth forever? It is widely agreed that such an object -- 10 kilometers across -- struck just off the coast of the Yucatan ...

Researchers from the University of Granada (UGR) have compared the disaster caused by the Aznalcóllar spillage in the Doñana National Park in Andalusia 11 years ago with the biggest species extinction ...

Dinosaur bones are found on every continent. Everywhere on earth, dinosaur fossils disappear at the end of the Cretaceous ...

Sun, G., Akhmetiev, M., Dong, Z. M., Ashraf, A. R., Sun, Y. W., Bugdaeva, E., Dilcher, D. L., Golovneva, L., Harding, I., Johnson, Kirk R., Kezina, T., Kodrul, T., Lu ...

This graph plots extinction rates of marine animal families over the last 600 million years. The shaded band indicates the normal range of extinction rates, known as "background extinction." The five ...

Definitively dating the age of a clutch of fossil dinosaur eggs at a famous site in China may let scientists link eggshell features to environmental shifts at the time.